Elevator.



No'. 718,230. PATBNTED JAN. la, 1903. L

w. H. B. TEAMBR.

ELEVATOR.

APPLIGATION FILED AP. 11, 1902.

No MODEL. z SHEETS-SHEET 1.

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Nrrnn Srnfrns .PATENT OFFICE.

WILLIAM H. B. TEAMER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OFTVO-THIRDSTO JOSEPH RAMSEY AND ISAAC ALLOWAYS, OF PHILADEL- PHIA,PENNSYLVANIA.

SPECIFICATION forming part'of Letters Patent No. 718,230, dated. January13, 1903. Application nel April 11,1962. serial No. 102,381. (No model.)

a citizen of the United States, anda resident of the city ofPhiladelphia, State of Pennsylvania, have invented lcertain new andluseful` Improvements in Elevators, of which the'following is a full,clear, and eXact description,

My invention relates" generally to an improvement in elevators, andparticularly to an improved mechanism for automatically controllingthecar at landings.

One of the main objects of myinvention is to `provide means whereby thecar Vwhen stopped at a landing or ioor lnay be alltomatically held insuch position so long as the landing-door is open and movement due toany defective action of the/controlling mechanism compensated forautomatically until the said door is closed.

A further object of my device is to provide means whereby the elevatoris immediately and automatically made to return to its proper positionat the landing should the controlling mechanism operate improperly orthe valves leak sufficiently to cause the elevator to commence itsmovement either in an upward or downward direction.

Another object is toprovide mechanism in combination with that abovereferred to whereby the landing-door is locked in its closed position atall times other than those when the elevator is not at that particularlanding or within a predetermined distance of the same.

For a detailed description of my invention reference may be had to thefollowing speciiication and to `the accompanying drawings, forming apart of the same, in which- Figure 1 shows a side elevation of a carembodying my device, one side of the car being shown removed. Fig. 2 isa sectional view of the mechanism carried by the car and the coactingmechanism located at a landing, showing the same engaged and takensubstantially on the line 2 2, Fig. 3, and looking toward the right.Fig. 3 is an elevation of the car and landing nlechanism, theoperating-shaft be-l ing shown as shortened for convenience. Fig. 4 is asectional view of the same parts,

shaft 5, carried by the car 1.

taken substantiallyk upon the line 2 2, Fig. 3, but looking toward theleft. Fig. 5 is a sectional view taken substantially upon the line 5 5,Fig. 3, looking toward theright; and Fig. 6 is a sectional view of thelower end of the door-bar and locking-hook, taken substan- Itially uponthe line 6 6, Fig.

reference being had to the accompanying drawings, forming part-of thisspecification.l

Similar reference-numerals indicate like part-s upon the several guresofthe drawings. Referring to Fig. 1, the numeral l indicates the bodyportion of the car, having the usual controller-wheel 2 or itsequivalent and the usual chain or belt 3, running to those parts yof thecontrolling mechanism carried by the car. 4 is an auxiliarysprocket-chain which connects the-mechanism for holding the car at thelanding with the controller-Wheel 2. At the bottom of the car, near theedge of the same, is supported a shaft 5 in suitable bearings 6 and 7.This shaft 5 has fixed or keyed llpon it three parts-to wit, asprocket-Wheel 8,a gear-wheel 9, and a cam or arm 10. The sprocket-chain4 passes around the sprocketwheel 8 and so connects the .shaft with thecontroller wheel. The parts thus far described constitute those carriedby the car.

Upon the vertical portion of the hatch, between the floor and the lowerceiling, is hinged or otherwise held the vertical rack 11 and is adaptedto be thrown into and out of engagement with the gear-wheel 9, which islocated in a vertical plane with the same upon the In this instance therack carries the projections 12 12, which are pivoted to the standards13 13, carried by the base-plate 1-1, which is fixed to the hatch; butsaid rack may be secured in any suitable way, provided it is free tomove toward and away from the gear-wheel to engage the same. The rackcarries a projection 15, within which is a diagonal or inclined slot 16.Said slot 16 is adapted to beengaged by a vertically-oscillating pin,hereinafter to be described, to move the rack inward and outward.

Upon the base-plate 14 is pivoted the bellcrank lever 15', having oneend weighted, as at 17, and its other end provided with a projection 18.A locking-bar 19 projects downwardly from the landing-door, and when thesame is closed bears against the projection 18, holding the same at thelimit of its move- IOO ment toward the right. A portion 20 projects fromthe hub of the bell-crank lever and carries a pin or projection 21,which is adapted to engage the slot 16 in the projection l5, carried bythe rack. It will be seen that when the landing-door is opened the bar19 will be moved toward the left, thus releasing the bellcrank lever andallowing it to turn about its pivot. This movement about the pivot willcause the pin 21 to travel upwardly in the inclined slot 16, and therebymove the rack 1l outwardly to engage the gear 9. The reverse movement ofthe bar 19 will canse the rack 11 to be disengaged from thc gear 9.

To the lower portion ofthe plate 14 is fixed a spring-arm 22, which isin a vertical plane with the arm 10 on the shaft 5. This arm 22 has araised portion 23, which extends upward and downwardly a predetermineddistance from a fixed line which represents the position when the ioorof the elevator is exactly level with the door at a landing. Thesedistances are fixed by the municipal regulations of some cities to threeinches. The spring-arm 22 is provided with a hooked or barbed portion 24at its upper end, which is adapted to engage the lower end of thelocking-bar 19 of the landing-door. The relation between the arm 10 andthe car-controlling mechanism is such that when the said mechanism is inthe position to stop the elevator the arm 10 will be in a horizontalposition and will bear upon the spring 22 at its raised part 23, so asto disengage the hook 24 from the end of the door-bar 19. It will beseen that if the car stops in such a position as to bring the arm 10within the space limited by the raised portion 23 the door may beopened. The opening of the door will release the bellcrank leverand soraise the rack 11 and cause the same to mesh with the gear-wheel 9. Thiswill not only lock the controller-wheel 2, so that it cannot be turnedby a person within the car, but should the controlling mechanism orvalves leak and cause the elevator to creep the controlling mechanismwould be automatically operated to compensate for the creeping motion,either by closing the valve or by reversing the controller to give aslight motion to the car in an opposite direction. This is made possiblefrom the fact that the rack 11 is ixed,and any motion of the car causesthe gear 9 to travel along the rack and rotate the shaft 5. For example,referring to Fig. 1, aclockwise motion of the controller-wheel 2 willstart the car downwardly and an anticlockwise motion will start the carupward. Should the controlling mechanism be defective and cause the carto creep in an upward direction, the rack 11 being stationary, the shaft5, and consequently the wheel 2, will be turned slightly in a clockwisedirection, which will just compensate for the upward motion by bringingthe car to a stop or give the car a slight downward motion, depending onthe adjustment and relations of the various parts. In the latter casethe downward motion after a slight limits depending upon the amount ofleakage and the lost motion7 between the parts.

It will thus be seen that I have produced a device which will accomplishthe objects above enumerated and by means of simple and efficientmechanism which is applicable to different forms of elevator-operatingmechanisms now in use, including hydraulic, steam, electric, dac.

The shaft 5, which carries the sprocket 8 and gear 9, is preferably madein two sections and connected by a universal joint, so that the endwhich carries the gear 9 may be inclined outward toward the landing, soas to bring said gear in a position to be engaged by the rack ll. Thisconstruction is resorted to in practice because the gear 9 is muchsmaller in diameter than the sprocket-wheel 3. The gear 9 mustnecessarily be beveled in proportion to the incline of the shaft, inorder that it may properly mesh with the rack 11.

Minor changes in details and arrangement of parts may be made withoutdeparting from the spirit of my invention.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

l. In combination, an elevator-car, a landing, controlling mechanism, acontroller member located upon the car, means at the landing to lock thecontroller member and to compensate for movement of the car whileadjacent the landing at which it is desired to stop the car andconnections between said means and controller member, substantially asdescribed.

2. In combination, an elevator-car, a landing, controlling mechanism, apivoted controller member located upon the car, means at the landing tolock the controller member from rotation while the car is stationary andto compensate for movement of the car due to defective action of thecontrolling mechanism, and connections between said means and controllermember, substantially as described.

3. In combination, an elevator-car, a landing, a door therefor,controlling mechanism, means for locking the landing-door when the caris more than a predetermined distance from the landing, and meansoperated by the door-locking means, to lock the controlling mechanismand to compensate for movement of the car while adjacent the landing atwhich it is desired to stop the car, substantially as described.

4. In combination, an elevator-car, alanding, a door therefor,controlling mechanism, a controller member located upon the car, meansfor locking the landing-door when the car is more than a predetermineddistance from the landing, and means operated by the door-locking meansto lock the controller IOO IIO

member and to compensate for movement of the car While adjacent thelanding at which it is desired to stop the car, substantially asdescribed.

5. In combination, an elevator-car, a landing, a door therefor,controlling mechanism, means located at the landing for lockingthelanding-door, means carried by the car for operating said locking means,and means operated by said door-locking means for locking thecontrolling mechanism, and to compensate for movement of the car Whileadjacent the landing at which it is desired to stop the car,substantially as described.

6. In combination, an elevator-car, a landing, a door therefor,controlling mechanism, a controller member located upon the car, meanslocated at the landing for locking the landing-door, means carried bythecar for operating said locking means, and means operated by saiddoor-locking means for locking the controller member, and to compensatefor movement of the car, While adjacent the landing at Which it isdesired to stop the car, substantially as described.

7. In combination, an elevator-car, a landing, a door therefor,controlling mechanism,

means located upon the car and connected With the controlling mechanismfor locking thelatter and for giving the same a movement to compensatefor a movement of the car due to defective action of the controllingmechanisni and means located at landing for locking the landing-door andfor actuating said means for operating the controlling mechanism,substantially as described.

8. In combination, an elevator-car, a landing, a door therefor,controlling mechanism, a gear, a rack, means connecting said gear andrack with the controlling mechanism, means for giving said lgear andrack a relative movement to cause the same to mesh and unmesh, and meansfor operating said latter means when the car is within a predetermineddistance of a landing, substantially as described. v

9. In combination, an elevator-car, a landing-door, controllingmechanism, a gear, a

rack, means connecting said gear and rack.

with the controlling mechanism, means for giving said gear and rack arelative movement to cause the same to mesh and unmesh, and door-lockingmeans, said door-locking means being connected with said gear and rackmeshing means to operate the same, substantially as described.

l0. In combination, an elevator-car, alanding, a door therefor,controlling mechanism, a shaft carried by a car and operativelyconnected with said controlling mechanism, a cam or arm carried by saidshaft, a gear also carried by said shaft, means for locking the doorlocated at the landing and adapted to be operated by said arm, a rackalso located at the landing and adapted to engage said gear, andconnections between said rack and said door-locking means to operate theformer to cause the same to mesh and unmesh With said gear,substantially as described.

1l. In combination, an elevator-car, alanding, controlling mechanism, ashaft carried by the car and operatively connected with said controllingmechanism, a cam or arm carried by said shaft, a gear also carried bysaid shaft, a door at the landing, a lockingbar projecting from saiddoor, means to engage said bar to lock said door and adapted to beoperated by said arm, a bell-crank lelever having one weighted arm and asecond arm adapted to engage said door-loci; ing bar, a projectioncarried by said bellcrank lever, a rack located at the landing andadapted to,move transversely to engage said gear, a part having adiagonal slot carried by said rack adapted to engage said projection,whereby the oscillation of the bell-crank lever Will operate said rackand cause the same to mesh and unmesh with said gear, substantially asdescribed.

In Witness whereof I have hereunto set my hand this 5th day of April,1902.

WILLIAM I-I. B. TEAMER.

Witnesses:

JNO. T. CRoss, CEAS. K. BENNETT.

